Fix lost details on HttpProcessingError (#9052) #5947

Job	Run time
Linter	49s
Generate llhttp sources	15s
Test (3.9, ubuntu, false)	5m 30s
Test (3.9, macos, false)	4m 53s
Test (3.9, windows, false)	6m 17s
Test (3.9, Y, ubuntu, false)	6m 49s
Test (3.10, ubuntu, false)	5m 43s
Test (3.10, macos, false)	4m 23s
Test (3.10, windows, false)	6m 14s
Test (3.10, Y, ubuntu, false)	5m 37s
Test (3.11, ubuntu, false)	5m 32s
Test (3.11, macos, false)	4m 19s
Test (3.11, windows, false)	6m 31s
Test (3.11, Y, ubuntu, false)	5m 29s
Test (3.12, ubuntu, false)	5m 56s
Test (3.12, macos, false)	4m 44s
Test (3.12, windows, false)	6m 39s
Test (3.12, Y, ubuntu, false)	6m 7s
Test (pypy-3.9, Y, ubuntu, false)	11m 14s
Test (ubuntu, 3.13, true, Y)	1m 26s
check	2s
Pre-Deploy	0s
Tarball	0s
Build wheels on ${{ matrix.os }} ${{ matrix.qemu }}	0s
Deploy	0s
	1h 44m 29s

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